Device for introducing teat-cup liners into teat cups



.n s 0J M. B. BENGTSON Filed Feb. 28, 1928 DEVICE FOR INTRODUCING TEAT CUP LINERS INTO TEAT CUPS Feb. 24, 1931.

F/GJ.

y Patented FebZ, 1931 Theobjectof JERSEY UNITED d Dnvrcn Foa INfrnonU applicati@ inea February as, i928, serial the invention is to provide a y means that,in the operation of securing the rubberA liner to the metal shell of a teat cup,

i will effect or ,facilitate fthe folding of the .A are shown in the drawings,

Fig. 1 isa longitudinal sectional view of liner around the end `ofthe shell. e

' Pref-erred embodiments ofV the invention in ,which-i Aan assembled teat cup.V

:.Fig. Zisa longitudinal Ysectional view j a device forinserting, stretching or holding Y the liner` inthe shell, associated with a contriva'nce, embodying l.my i ingY theV projecting end ...the end neck invention, for folde of the'liner around of the shell.

Fig. 3 is a similar view 'of a modified liner- Y folding contrivance embodying my invenably having (secured f elastic (rubber) i isfactorily, u

Vliner and shell, to stretch the liner and maming its tion., Y kThe-teat tion,

cup, whichi's of knownv construcg ycomprises a cylindrical shell, preferthereto or integral therewith) a contracted neck b connected with shell a by a shoulder a; a flexible and liner f and a ring e,- which expands the end of the liner intended for engagement with the teat and confines it within the enlarged mouth d of shell a. The other end of the liner extends beyond the neck b and is folded down over the outside of the neck.

In order that the' teat cup shall work satit is necessary, in assemblingthe tain it stretched while its end is folded aroundV the neck of the shell. vThe proper insertion of the teat cup by hand involves the exercise of considerable muscular force as well as a degree of skill which can be attained only by repeatedly performing they operation. A

yIt is known to effect or facilitate the operation byV employing mechanical devices! that maintain the liner stretched while foldprojecting end around the endof the shell. While such jmechanical devices dov difficulty of folding of the shell. Y

It is advis blev or necessary, however, in

the liner around the end inonepi'eceof yoke end ofthe same being 'adapted v.toert- V,tend into the. .standardh l Each springfis provided, between itsiends, with 'a bend'or,` -Whenfthe contriyance ispartly f inserted Y It' is; not necessary',

Y should have a- Vspring faction', although itis Y advisable thatjythe movement of 'the *folding contrivance into? .fol/ding -yieldinglypor*flexibly-resisted. InFig. 3j a l 'contrivance is shown iin'which, fora spring on', 'is substitutedtwo arms, i 10 and 79,1 arranged tol .MARTIN BERNHARD BnNe'rsoN, or srooxnomvig 'sw'nnNQ Asistencia" lTo. una mi `LAVAL snraaa'roa coMrANY, or New Yoan N. Y., Avvconr'ona'rion or vnaw No. 257,566, and ia sweden February 9, iena K A using my-improvement, to maintain the liner in stretched condition while folding -itsend over the end yneck Aofthe shell. Any appro-v priate device may be. used for this purpose. TheV device shownfissuitable. This Vdevice comprisesa'base g, which supports' a. standard 7L having Yan stretches the linerpwhile; it is ,being inserted therein and which expands the linernear the end thereof which is to be folded overfthe shelll and tends toprevent the liner from contracting vand to drawn, by the elasticity the shell'neckfv ,i .7.;

The folding contrivance, in the; embodi-v mentrof.v the 'invention prises a handle lo carryingplate springs-m.

of the liner, within Two such springs may be conveniently made Y y an approximate'U-shapesfthe liner and engage the endjkof projection-a.

into -the teat cup,and` the handle [c forced down, the springsm change' their form; that is,theyareexpandedradially of the axis of thefteat cupand are moreY and, whilethe change of formofspringsis proceeding, the' projecting endof `the liner ,is v` displacedtow'ard aplaneat approximately Y right angles' toits axis. The bends 'n are so shaped thatth'e endjof the liner 1cannotislipoffuntil after` it is'soY displaced radially that around thesarne.' Y that 'position shall, be

form a toggle joint orV elbow joint. 'Linkse are pivotally. attached to handle-l0. .Links-which are respectively 4pivotedto links o are pivotally v.attached to v'a enlarged head whichy hold the end thereof pro- ,Y jecting .beyondjthe shellV lneck frombeing v or less. flattened. j y'llh-elbendsfa engage" the liner near itsl end,

4the members it readily fold'sor is foldable down'around l i rvthe vendrof theshell neck .and formosacollar .y

rodsV ori-links,

p shell.

plate r adapted to engage the end of standard late r is carried by a rod or bar t AWhich is slidable in the handle. A' coil spring s is confined between the base of a recess inthe handle and a. collar u on the bar.V Links p are provided With bendsor projectionsw, which function like the bends a of ig. 2. n y Inj operation,the contrivance is positioned so that plate 1" z. The handle 1 is forced down against the action of spring-s and the arms of the toggles swing out. The bends o engage the liner near lts end and the projecting end of the liner is displaced, justas inthe operation of the device of Fig. 2, and the.

illustrative of my invention, which tible of other specific embodiments.

Having now fully described'myinvention, Y What-1 claim and desire'to protect by Letters Patent isi 1 l. A contrivance Vfor folding'the ends of a'teat cup liner-'upon a teat cup which com.- prises a `handle, members carried 'thereby Whose ends are insertable into the projecting ellggS the end of standardend of the` liner slips:

ofi' the links p andis folded down to form the 'gage the liner Nsertable Within the Ying projections on under such pressure, to the liner over the shell.

4; Means for folding the end of a teat cup liner upon a teat cup shell which comprises the' combination, With a stopy VV,relatively fixed relation with the teat cup, of a linerfolding contrivance `Which is adapted to displace the end of vpartly extend Ainto the end of the liner and v'ivhich is deformable, stop, to displace the by pressure against said end of' the liner outward over the shell. i'

5. A-contrivance for folding thelend of a teat cup liner upon a teat cup shell beyond Which the liner projects, which comprises radially displaceable members adapted to ennear its end and confine it against the circumferential edge of the shell, and means to radially displace said members and thereby displaceover the shell the end of the liner projecting beyond the shell.

6. Acontrivance forfolding the ends ofia uponV a teat cup' shell which Y teat cup 'liner l comprises radially Yexpansible members inend of the liner yprojecting-beyond the shell'a'nd vadaptedv to displace said` liner end outwardfover the shell, and

means to so expand said members', ther 'biesaid membersl adapted to 4 engage the liner near its extremity and hold the liner While it is being so displaced.r In testimony ,of Which invention, I have hereunto set my hand, at Stockholm, Sweden,

lon this 9th dav of February, 1928.

MARTIN BERNHARD RRNerTsoN. V v

end of the liner, said members being displaceable 'in a radial direction to effect a similar displacement of the fend `ofthe liner,fan,d 'Y vmeans on saidmembers adapted to maintain the liner in engagement withY said members until the end of theliner is'brought'intosuch position that` when 'it slips off said members it: forms acollar fol edV overftheteat cup V2. contrivance for folding the end'of a teat cup lliner upon A'a tea cup'shell comprising j a handle,

the links .of a pair being gto-each other and 4 fspectively-Ywith vthe handle and thefend of a bar carried by,

and slidable longiof, the handle,

and rpairs of links, pivotally connected in pivotal connection retudinally sald bar, the links connected with said bar `liner upon a teat cup the combination, With 'Y ing the liner stretched folding contrivance adapted to partly extend v into the end of the linerand engage the end Vof said holder andtobe pressed against the Y holder, said `contrivance being' deformable,

being adapted tof-engage'theProjecting lend i Outward over the 'shell of the liner and bend it as the handle'"ismovedtoward'the teatfcup. I

'l SfMfeans for folding the end` of'a' teat cup a holder formaintainon-the shell, of a `linershelljwhichcomprises i 

